| 56,37 → 56,33 |
|---|
| ; |
| ; This function resets all ethernet variables |
| ; |
| ; IN: / |
| ; OUT: / |
| ; |
| ;----------------------------------------------------------------- |
| align 4 |
| ETH_init: |
| macro ETH_init { |
| |
| mov [ETH_RUNNING], 0 |
| |
| ret |
| } |
| |
| |
| ;----------------------------------------------------------------- |
| ; |
| ; ETH_Receiver: |
| ; ETH_input |
| ; |
| ; This function is called by ethernet drivers, |
| ; It pushes the received ethernet packets onto the eth_in_queue |
| ; |
| ; IN: [esp] = Pointer to buffer |
| ; [esp-4] = size of buffer |
| ; [esp+4] = size of buffer |
| ; ebx = pointer to eth_device |
| ; OUT: / |
| ; |
| ;----------------------------------------------------------------- |
| align 4 |
| ETH_receiver: |
| ETH_input: |
| mov eax, [esp] |
| mov ecx, [esp+4] |
| |
| DEBUGF 1,"ETH_Handler - size: %u\n", ecx |
| DEBUGF 1,"ETH_input - size: %u\n", ecx |
| cmp ecx, 60 ; check packet length |
| jl .dump |
| sub ecx, ETH_FRAME.Data |
| 95,10 → 91,10 |
|---|
| mov ax , [eax + ETH_FRAME.Type] |
| |
| cmp ax, ETHER_IPv4 |
| je IPv4_handler |
| je IPv4_input |
| |
| cmp ax, ETHER_ARP |
| je ARP_handler |
| je ARP_input |
| |
| ; cmp ax, ETHER_PPP_DISCOVERY |
| ; je PPPOE_discovery |
| 106,7 → 102,7 |
|---|
| DEBUGF 2,"Unknown ethernet packet type %x\n", ax |
| |
| .dump: |
| DEBUGF 2,"ETH_Handler - dumping\n" |
| DEBUGF 2,"ETH_input - dumping\n" |
| call kernel_free |
| add esp, 4 |
| ret |
| 113,12 → 109,12 |
|---|
| |
| ;----------------------------------------------------------------- |
| ; |
| ; ETH_create_packet |
| ; ETH_output |
| ; |
| ; IN: eax = pointer to source mac |
| ; ebx = pointer to destination mac |
| ; ebx = device ptr |
| ; ecx = packet size |
| ; edx = device number |
| ; edx = pointer to destination mac |
| ; di = protocol |
| ; |
| ; OUT: edi = 0 on error, pointer to buffer otherwise |
| 129,62 → 125,60 |
|---|
| ; |
| ;----------------------------------------------------------------- |
| align 4 |
| ETH_create_packet: |
| ETH_output: |
| |
| DEBUGF 1,"Creating Ethernet Packet (size=%u): \n", ecx |
| DEBUGF 1,"ETH_output: size=%u device:%x\n", ecx, ebx |
| |
| push esi |
| mov esi, [NET_DRV_LIST] ;;; TODO: FIXME |
| cmp ecx, [esi + NET_DEVICE.mtu] |
| pop esi |
| cmp ecx, [ebx + NET_DEVICE.mtu] |
| jg .exit |
| |
| push ecx di eax ebx edx |
| push ecx ; << 1 |
| push di eax edx ; << 2 |
| add ecx, ETH_FRAME.Data |
| |
| add ecx, ETH_FRAME.Data |
| push ecx |
| push ecx |
| call kernel_alloc |
| push ecx ; << 3 |
| |
| push ecx ; << 4 |
| call kernel_alloc ; >> 4 |
| test eax, eax |
| jz .out_of_ram |
| mov edi, eax |
| test edi, edi |
| jz .pop_exit |
| |
| pop ecx |
| pop edx |
| pop ecx ; >> 3 |
| |
| pop esi |
| pop esi ; >> 2 |
| movsd |
| movsw |
| pop esi |
| pop esi ; >> 2 |
| movsd |
| movsw |
| pop ax |
| pop ax ; >> 2 |
| stosw |
| |
| lea eax, [edi - ETH_FRAME.Data] ; Set eax to buffer start |
| mov edx, ecx ; Set ebx to complete buffer size |
| pop ecx |
| mov edx, ecx ; Set edx to complete buffer size |
| |
| xor ebx, ebx ;;;; TODO: Fixme |
| mov ebx, [NET_DRV_LIST + ebx] |
| pop ecx ; >> 1 |
| |
| cmp edx, 46 + ETH_FRAME.Data ; If data size is less then 46, add padding bytes |
| jge .continue |
| mov edx, 46 + ETH_FRAME.Data |
| .continue: |
| cmp edx, 60-1 ; minimum ethernet packet size |
| jle .adjust_size |
| DEBUGF 1,"ETH_output: done: %x total size: %u\n", eax, edx |
| ret |
| |
| DEBUGF 1,"done: %x size:%u device:%x\n", eax, edx, ebx |
| .adjust_size: |
| mov edx, 60 |
| ret |
| |
| .pop_exit: |
| DEBUGF 2,"Out of ram space!!\n" |
| add esp, 18 |
| and edi, 0 |
| .out_of_ram: |
| DEBUGF 2,"ETH_output: Out of ram space!!\n" |
| add esp, 3*4+2+4 |
| sub edi, edi |
| ret |
| |
| .exit: |
| DEBUGF 2,"Packet too large!\n" |
| and edi, 0 |
| DEBUGF 2,"ETH_output: Packet too large!\n" |
| sub edi, edi |
| ;;; dec edi |
| ret |
| |
| |